Chill or freeze Twinkies for several hours or overnight. Heat vegetable oilin deep fryer to about 375F. Prepare batter by mixing together milk, vinegarand oil. In another bowl, blend flour, baking powder and salt. Whisk wetingredients into dry and continue mixing until smooth. Refrigerate while oilheats. Dust twinkie with flour and dip into the batter. Rotate Twinkie untilbatter covers entire cake. Place carefully in hot oil. The Twinkie willfloat, so hold it under with a utensil to ensure even browing. It shouldturn golden in 3 to 4 minutes. Depending on the size of your deep fryer, youmight be able to fry only one at a time, two at the most. Remove Twinkie topaper towel and let drain. Let the Twinkie sit for about 5 minutes beforeserving. You may dust with powdered sugar before serving.